Right, well. As with anything, there are a few things to consider if you want your product to be famous.
Looking at the screenshots on your linked page, the map looks alright. That said, a lot of maps these days go above and beyond with regard to quality so there's plenty of room for improvement. Make sure your map is easy to follow, runs smoothly, is free of glitches and isn't too difficult or too easy. Gimmicks are also very important since many successful maps have some sort of unique feature that's never been seen before.
As for availability, you want your map to be seen by lots of players. If some popular Youtubers played it then you'd have that pretty much covered but keep in mind that the top YouTubers are only looking for the best maps to play. I'd reccommend submitting your map to minecraftmaps.com if you haven't already - most decent maps on there get upwards of a thousand downloads if you've got an enticing name and roster of screenshots. I think there's also a subreddit for Minecraft maps, but I'm not sure what it's called.